header{
    width: 100%;
    height: 44px;
    text-align: center;
    line-height: 44px;
    color: rgba(16, 16, 16, 1);
    font-size: 18px;
    background: #f8f8f8;
}
main{
    position: relative;
    background:url('../img/advertisement-bg.jpg');
    background-size: cover;
    background-position: top center;
    p{
        position: absolute;
        width: 100%;
        font-weight: 600;
        text-align: center;
        animation: textRun 1s forwards;
     
    }
}

@keyframes textRun {
    0%{
        color: rgba(255,255,255,0);
        font-size: 0;
        bottom: 300px;
    }

    80%{
        color: rgba(255,255,255,.8);
        font-size:40px;
        bottom: 110px;

    }

    100%{
        color: rgba(255,255,255,1);
        font-size:48px;
        bottom: 124px;
    }
}

.con{
    position: absolute;
    top: 28;
    right: 14px;
    width: 105px;
    height: 40px;
    padding: 7.5px 0;
    border-radius: 20px;
    background: #fff;
    text-align: center;
    line-height: 40px;
.timer{
    width: 40px;
    height: 25px;
}
}